Hydraulic Pump

Excavator Hydraulic Main Pump LC10V00041F1 K7V140 For KOBELCO SK330 SK350

Kawasaki Precision Machinery’s K7V series includes swash plate variable displacement axial piston pumps suitable for use in mobile and industrial applications such as excavators, cranes, etc.
With Kawasaki’s latest technology this pump is better in efficiency and noise, contributing to energy savings and a comfortable working environment.

Product Descriptio

We can supply you all kinds of excavator spare parts as following:

1.Hydraulic parts: hydraulic pump, main control valve, hydraulic cylinder, final drive, travel motor, swingmotor,gear box, slewing bearing etc.

2.Engine parts: engine assy, piston, piston ring, cylinder block, cylinder head

crankshaft, turbocharger,fuel injection pump, starting motor and alternator etc.

3.Undercarriage parts: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion,coil adjuster,rubber track and pad etc.

4.Cab parts: operator’s cab assy, wiring harness, monitor, controller, seat, door etc.

Theory

The excavator hydraulic pump is one of the key components in the excavator hydraulic system and is used to provide the pressure and flow required by the hydraulic system. Here's how it works:

1. Structure of a hydraulic pump: A hydraulic pump usually consists of a drive shaft, a drive device (such as an electric motor or engine) and a pump body. There is a rotor and a casing inside the pump body. The rotor is connected to the driving device through a drive shaft.
2. Oil suction stage: When the hydraulic pump starts to work, the driving device starts, and the drive shaft drives the rotor to rotate. During the oil suction stage, when the rotor rotates, some closed cavities will be formed inside the pump body. As these cavities pass by the oil inlet, they expand, creating an area of negative pressure. Negative pressure draws oil from the hydraulic tank into the pump body.
3. Oil pressure stage: When the rotor continues to rotate, the cavity gradually shrinks, pushing the oil to the oil outlet of the pump body. During this process, the oil passes through the pressure control device of the pump body, such as a hydraulic valve, etc., which can control the pressure and flow of the oil. The output pressure of a hydraulic pump depends on the needs of the hydraulic system and the design and adjustment of the pump.
4. Oil circulation: The pump body pushes pressure oil into the hydraulic system, and the oil is transported through pipelines to actuators, such as hydraulic cylinders or hydraulic motors, to realize the movement and operation of the excavator. After completing the work, the oil returns to the hydraulic tank and is recycled again.
To sum up, the working principle of the excavator hydraulic pump is to drive the rotor to rotate through the driving device, form a negative pressure area to suck in the oil during the oil suction stage, and then push the oil into the hydraulic system during the oil pressure stage to achieve pressure and control of the hydraulic system. Traffic supply. In this way, the excavator can complete various work tasks with the help of hydraulic force and flow.